Ontology of Biological Attributes id OBA_2053202 (PSMD9/UBAC1 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of 26S proteasome non-ATPase regulatory subunit 9 (human) in blood to amount of ubiquitin-associated domain-containing protein 1 (human) in blood. Also known as: the ratio of amount of 26S proteasome non-ATPase regulatory subunit 9 (human) in blood to amount of ubiquitin-associated domain-containing protein 1 (human) in blood.